John Blades operates "Blades Antiquarian Book Store" and possesses pale hair. His bookstore serves as a front for supporting the chocolate resistance movement. Blades created the secret code required to locate the Underground Chocolate Party, granting access to covert gatherings where chocolate is distributed illegally. He supplies Smudger and Huntley with a specific book, "The Knowledge of Chocolate" by Albert C. Hathwell, which contains essential instructions enabling them to produce chocolate themselves. His actions directly aid protagonists in bootlegging chocolate. Louise, a key figure opposing the chocolate ban, maintains a romantic interest in him. Blades' role involves providing crucial resources and knowledge to the resistance, while his bookstore functions as a hub coordinating underground activities against the chocolate prohibition.